[deliverable/linux.git] / sound / soc / pxa / hx4700.c

/*
 * SoC audio for HP iPAQ hx4700
 *
 * Copyright (c) 2009 Philipp Zabel
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio.h>

#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>

#include <mach/hx4700.h>
#include <asm/mach-types.h>
#include "pxa2xx-i2s.h"

#include "../codecs/ak4641.h"

static struct snd_soc_jack hs_jack;

/* Headphones jack detection DAPM pin */
static struct snd_soc_jack_pin hs_jack_pin[] = {
	{
		.pin	= "Headphone Jack",
		.mask	= SND_JACK_HEADPHONE,
	},
	{
		.pin	= "Speaker",
		/* disable speaker when hp jack is inserted */
		.mask   = SND_JACK_HEADPHONE,
		.invert	= 1,
	},
};

/* Headphones jack detection GPIO */
static struct snd_soc_jack_gpio hs_jack_gpio = {
	.gpio		= GPIO75_HX4700_EARPHONE_nDET,
	.invert		= true,
	.name		= "hp-gpio",
	.report		= SND_JACK_HEADPHONE,
	.debounce_time	= 200,
};

/*
 * iPAQ hx4700 uses I2S for capture and playback.
 */
static int hx4700_hw_params(struct snd_pcm_substream *substream,
			    struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret = 0;

	/* set the I2S system clock as output */
	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
			SND_SOC_CLOCK_OUT);
	if (ret < 0)
		return ret;

	/* inform codec driver about clock freq *
	 * (PXA I2S always uses divider 256)    */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
			SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops hx4700_ops = {
	.hw_params = hx4700_hw_params,
};

static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
			    struct snd_kcontrol *k, int event)
{
	gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
	return 0;
}

static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
			   struct snd_kcontrol *k, int event)
{
	gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
	return 0;
}

/* hx4700 machine dapm widgets */
static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
	SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
	SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
};

/* hx4700 machine audio_map */
static const struct snd_soc_dapm_route hx4700_audio_map[] = {

	/* Headphone connected to LOUT, ROUT */
	{"Headphone Jack", NULL, "LOUT"},
	{"Headphone Jack", NULL, "ROUT"},

	/* Speaker connected to MOUT2 */
	{"Speaker", NULL, "MOUT2"},

	/* Microphone connected to MICIN */
	{"MICIN", NULL, "Built-in Microphone"},
	{"AIN", NULL, "MICOUT"},
};

/*
 * Logic for a ak4641 as connected on a HP iPAQ hx4700
 */
static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	int err;

	/* Jack detection API stuff */
	err = snd_soc_jack_new(codec, "Headphone Jack",
				SND_JACK_HEADPHONE, &hs_jack);
	if (err)
		return err;

	err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pin),
					hs_jack_pin);
	if (err)
		return err;

	err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);

	return err;
}

static int hx4700_card_remove(struct snd_soc_card *card)
{
	snd_soc_jack_free_gpios(&hs_jack, 1, &hs_jack_gpio);

	return 0;
}

/* hx4700 digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link hx4700_dai = {
	.name = "ak4641",
	.stream_name = "AK4641",
	.cpu_dai_name = "pxa2xx-i2s",
	.codec_dai_name = "ak4641-hifi",
	.platform_name = "pxa-pcm-audio",
	.codec_name = "ak4641.0-0012",
	.init = hx4700_ak4641_init,
	.dai_fmt = SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
		   SND_SOC_DAIFMT_CBS_CFS,
	.ops = &hx4700_ops,
};

/* hx4700 audio machine driver */
static struct snd_soc_card snd_soc_card_hx4700 = {
	.name			= "iPAQ hx4700",
	.owner			= THIS_MODULE,
	.remove			= hx4700_card_remove,
	.dai_link		= &hx4700_dai,
	.num_links		= 1,
	.dapm_widgets		= hx4700_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(hx4700_dapm_widgets),
	.dapm_routes		= hx4700_audio_map,
	.num_dapm_routes	= ARRAY_SIZE(hx4700_audio_map),
	.fully_routed		= true,
};

static struct gpio hx4700_audio_gpios[] = {
	{ GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
	{ GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
};

static int hx4700_audio_probe(struct platform_device *pdev)
{
	int ret;

	if (!machine_is_h4700())
		return -ENODEV;

	ret = gpio_request_array(hx4700_audio_gpios,
				ARRAY_SIZE(hx4700_audio_gpios));
	if (ret)
		return ret;

	snd_soc_card_hx4700.dev = &pdev->dev;
	ret = snd_soc_register_card(&snd_soc_card_hx4700);
	if (ret)
		gpio_free_array(hx4700_audio_gpios,
				ARRAY_SIZE(hx4700_audio_gpios));

	return ret;
}

static int hx4700_audio_remove(struct platform_device *pdev)
{
	snd_soc_unregister_card(&snd_soc_card_hx4700);

	gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
	gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);

	gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
	return 0;
}

static struct platform_driver hx4700_audio_driver = {
	.driver	= {
		.name = "hx4700-audio",
		.pm = &snd_soc_pm_ops,
	},
	.probe	= hx4700_audio_probe,
	.remove	= hx4700_audio_remove,
};

module_platform_driver(hx4700_audio_driver);

MODULE_AUTHOR("Philipp Zabel");
MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:hx4700-audio");
Commit	Line	Data
c26f642e DA	1	/*
	2	* SoC audio for HP iPAQ hx4700
	3	*
	4	* Copyright (c) 2009 Philipp Zabel
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2 of the License, or (at your
	9	* option) any later version.
	10	*
	11	*/
	12
	13	#include <linux/module.h>
	14	#include <linux/timer.h>
	15	#include <linux/interrupt.h>
	16	#include <linux/platform_device.h>
	17	#include <linux/delay.h>
	18	#include <linux/gpio.h>
	19
	20	#include <sound/core.h>
	21	#include <sound/jack.h>
	22	#include <sound/pcm.h>
	23	#include <sound/pcm_params.h>
	24	#include <sound/soc.h>
	25
	26	#include <mach/hx4700.h>
	27	#include <asm/mach-types.h>
	28	#include "pxa2xx-i2s.h"
	29
	30	#include "../codecs/ak4641.h"
	31
	32	static struct snd_soc_jack hs_jack;
	33
	34	/* Headphones jack detection DAPM pin */
	35	static struct snd_soc_jack_pin hs_jack_pin[] = {
	36	{
	37	.pin = "Headphone Jack",
	38	.mask = SND_JACK_HEADPHONE,
	39	},
	40	{
	41	.pin = "Speaker",
	42	/* disable speaker when hp jack is inserted */
	43	.mask = SND_JACK_HEADPHONE,
	44	.invert = 1,
	45	},
	46	};
	47
	48	/* Headphones jack detection GPIO */
	49	static struct snd_soc_jack_gpio hs_jack_gpio = {
	50	.gpio = GPIO75_HX4700_EARPHONE_nDET,
	51	.invert = true,
	52	.name = "hp-gpio",
	53	.report = SND_JACK_HEADPHONE,
	54	.debounce_time = 200,
	55	};
	56
	57	/*
	58	* iPAQ hx4700 uses I2S for capture and playback.
	59	*/
	60	static int hx4700_hw_params(struct snd_pcm_substream *substream,
	61	struct snd_pcm_hw_params *params)
	62	{
	63	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	64	struct snd_soc_dai *codec_dai = rtd->codec_dai;
65	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
66	int ret = 0;
67
c26f642e DA	68	/* set the I2S system clock as output */
	69	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
	70	SND_SOC_CLOCK_OUT);
	71	if (ret < 0)
	72	return ret;
	73
	74	/* inform codec driver about clock freq *
	75	* (PXA I2S always uses divider 256) */
	76	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
	77	SND_SOC_CLOCK_IN);
	78	if (ret < 0)
	79	return ret;
	80
	81	return 0;
	82	}
	83
	84	static struct snd_soc_ops hx4700_ops = {
	85	.hw_params = hx4700_hw_params,
	86	};
	87
	88	static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
	89	struct snd_kcontrol *k, int event)
	90	{
	91	gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
	92	return 0;
	93	}
	94
	95	static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
	96	struct snd_kcontrol *k, int event)
	97	{
	98	gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
	99	return 0;
	100	}
	101
	102	/* hx4700 machine dapm widgets */
	103	static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = {
	104	SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
	105	SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
	106	SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
	107	};
	108
	109	/* hx4700 machine audio_map */
	110	static const struct snd_soc_dapm_route hx4700_audio_map[] = {
	111
	112	/* Headphone connected to LOUT, ROUT */
	113	{"Headphone Jack", NULL, "LOUT"},
	114	{"Headphone Jack", NULL, "ROUT"},
	115
	116	/* Speaker connected to MOUT2 */
	117	{"Speaker", NULL, "MOUT2"},
	118
	119	/* Microphone connected to MICIN */
	120	{"MICIN", NULL, "Built-in Microphone"},
	121	{"AIN", NULL, "MICOUT"},
	122	};
	123
	124	/*
	125	* Logic for a ak4641 as connected on a HP iPAQ hx4700
	126	*/
	127	static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
	128	{
	129	struct snd_soc_codec *codec = rtd->codec;
c26f642e DA	130	int err;
c26f642e DA	131
c26f642e DA	132	/* Jack detection API stuff */
	133	err = snd_soc_jack_new(codec, "Headphone Jack",
	134	SND_JACK_HEADPHONE, &hs_jack);
	135	if (err)
	136	return err;
	137
	138	err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pin),
	139	hs_jack_pin);
	140	if (err)
	141	return err;
	142
	143	err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);
	144
	145	return err;
	146	}
	147
16088cb6	148	static int hx4700_card_remove(struct snd_soc_card *card)
e1d4d3c8 SW	149	{
	150	snd_soc_jack_free_gpios(&hs_jack, 1, &hs_jack_gpio);
	151
	152	return 0;
	153	}
	154
c26f642e DA	155	/* hx4700 digital audio interface glue - connects codec <--> CPU */
	156	static struct snd_soc_dai_link hx4700_dai = {
	157	.name = "ak4641",
	158	.stream_name = "AK4641",
	159	.cpu_dai_name = "pxa2xx-i2s",
	160	.codec_dai_name = "ak4641-hifi",
	161	.platform_name = "pxa-pcm-audio",
	162	.codec_name = "ak4641.0-0012",
	163	.init = hx4700_ak4641_init,
673847cf AL	164	.dai_fmt = SND_SOC_DAIFMT_MSB \| SND_SOC_DAIFMT_NB_NF \|
673847cf AL	165	SND_SOC_DAIFMT_CBS_CFS,
c26f642e DA	166	.ops = &hx4700_ops,
	167	};
	168
	169	/* hx4700 audio machine driver */
	170	static struct snd_soc_card snd_soc_card_hx4700 = {
	171	.name = "iPAQ hx4700",
561c6a17	172	.owner = THIS_MODULE,
e1d4d3c8	173	.remove = hx4700_card_remove,
c26f642e DA	174	.dai_link = &hx4700_dai,
	175	.num_links = 1,
	176	.dapm_widgets = hx4700_dapm_widgets,
	177	.num_dapm_widgets = ARRAY_SIZE(hx4700_dapm_widgets),
	178	.dapm_routes = hx4700_audio_map,
	179	.num_dapm_routes = ARRAY_SIZE(hx4700_audio_map),
c529d0a4	180	.fully_routed = true,
c26f642e DA	181	};
	182
	183	static struct gpio hx4700_audio_gpios[] = {
	184	{ GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
	185	{ GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
	186	};
	187
d7f1be84	188	static int hx4700_audio_probe(struct platform_device *pdev)
c26f642e DA	189	{
	190	int ret;
	191
	192	if (!machine_is_h4700())
	193	return -ENODEV;
	194
	195	ret = gpio_request_array(hx4700_audio_gpios,
	196	ARRAY_SIZE(hx4700_audio_gpios));
	197	if (ret)
	198	return ret;
	199
	200	snd_soc_card_hx4700.dev = &pdev->dev;
	201	ret = snd_soc_register_card(&snd_soc_card_hx4700);
	202	if (ret)
497d4965 AL	203	gpio_free_array(hx4700_audio_gpios,
497d4965 AL	204	ARRAY_SIZE(hx4700_audio_gpios));
c26f642e	205
497d4965	206	return ret;
c26f642e DA	207	}
c26f642e DA	208
d7f1be84	209	static int hx4700_audio_remove(struct platform_device *pdev)
c26f642e	210	{
c26f642e DA	211	snd_soc_unregister_card(&snd_soc_card_hx4700);
	212
	213	gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
	214	gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);
	215
	216	gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
	217	return 0;
	218	}
	219
	220	static struct platform_driver hx4700_audio_driver = {
	221	.driver = {
	222	.name = "hx4700-audio",
c26f642e DA	223	.pm = &snd_soc_pm_ops,
	224	},
	225	.probe = hx4700_audio_probe,
d7f1be84	226	.remove = hx4700_audio_remove,
c26f642e DA	227	};
c26f642e DA	228
2f702a19	229	module_platform_driver(hx4700_audio_driver);
c26f642e DA	230
	231	MODULE_AUTHOR("Philipp Zabel");
	232	MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
	233	MODULE_LICENSE("GPL");
	234	MODULE_ALIAS("platform:hx4700-audio");